How to clean AC coils to improve cooling in Dubai?« Back to Previous Page

Dirty evaporator or condenser coils are a primary reason for reduced cooling efficiency and higher electricity bills in Dubai, especially with our high dust levels and year-round AC operation. The fine construction sand from nearby sites is particularly problematic as it quickly coats coils, acting as an insulating blanket that forces the compressor to work harder.

For a basic clean, first ensure the AC unit is completely powered off at the circuit breaker. Remove the front panel to access the evaporator coils. Using a soft brush attachment on a vacuum, gently remove loose dust. Follow this by spraying a coil cleaner solution (available at hardware stores) designed for finned coils; avoid harsh chemicals that can damage the aluminum fins. Let the foam dwell for the time specified on the product, then rinse thoroughly with low-pressure water from a spray bottle to avoid bending the delicate fins. Ensure all components are completely dry before restoring power.

Be aware that in many Dubai apartments, the condenser coil is located in an external partition wall and is extremely difficult to access safely without professional tools. A DIY approach also carries a high risk of damaging the fragile fins or electrical components, which can lead to costly repairs.

Given the symptoms you describe—reduced cooling, a straining unit, and a spiked electricity bill—the issue may be more severe than surface dust, potentially involving refrigerant levels or compressor issues. For a problem that is already impacting performance, a professional inspection is the most effective course of action. They can perform a deep clean with appropriate biocides and provide a verifiable assessment of the system’s overall health before the peak summer demand.